Stacey Dogan writes that antitrust regulators in the United States and Europe are right to investigate Big Tech-AI partnerships. Even if AI markets remain competitive today, history and economics show that the Big Tech companies will push to monopolize segments of the AI market if given the opportunity. The investigations serve as a deterrent against anticompetitive behavior and give the regulators access to the knowledge and information that will be necessary to detect anticompetitive patterns as the AI market matures.